The influence of the interfacial conditions on rust conversion by phosphoric acid

The results from an experimental study on rust conversion by phosphoric acid are presented. Steel surfaces were pre-rusted for variable periods in a natural atmosphere, subsequently brushed and pretreated with phosphoric acid solutions at different concentrations. It was found that the conversion of...

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Bibliographic Details
Published in:Corrosion science 1997-09, Vol.39 (9), p.1561-1570
Main Authors: Almeida, E., Pereira, D., Figueiredo, M.O., Lobo, V.M.M., Morcillo, M.
Format: Article
Language:English
Subjects:
A. mild steel
Applied sciences
B. EDS
B. SEM
B. XRD
C. rust
Exact sciences and technology
Metals. Metallurgy
Nonmetallic coatings
Production techniques
Surface treatment
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Summary:The results from an experimental study on rust conversion by phosphoric acid are presented. Steel surfaces were pre-rusted for variable periods in a natural atmosphere, subsequently brushed and pretreated with phosphoric acid solutions at different concentrations. It was found that the conversion of rust depends strongly on the time of exposure and on the acid concentration used in the pretreatment. Analysis of the surfaces with optical and scanning electron microscopy (SEM) equipped with EDS, X-ray diffraction (XRD), FTIR, Mössbauer spectroscopy and other methods were used in this work.
ISSN:0010-938X
1879-0496
DOI:10.1016/S0010-938X(97)00058-9